JPH0722531B2 - Display desk - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present application has a display such as a computer installed on the lower side of a top plate so that the display can be opened and closed by opening and closing the top plate. For example, it is installed in a classroom for learning. Display desk.

Conventional technology Conventionally, in the center of the top plate of the desk body, while providing an opening of a size that allows the display to appear and disappear, at the position of the opening, the rear edge of the lid piece that closes the opening is pivotally attached so as to be tiltable. And,
A display desk used for learning and the like is provided by providing a display mounting shelf on the lower surface of the lid piece, and when using, a display is installed on the lower surface of the lid piece via the mounting shelf. Then, in this state, the lid piece is tilted upward so that the screen of the display is exposed from the opening portion on the top plate in an upward state.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, according to the above-mentioned conventional display desk,
The display exposes its screen on the top plate by following the circular motion due to the tilting of the lid piece.Therefore, in the case of a large display, the radius of the circular motion is required, and the cover moves accordingly. Since it is necessary to increase the depth dimension of one piece, the desk becomes large and it is not possible to install many display desks in a classroom of a certain size. When using displays of different sizes, the exposed screens also have different inclinations, which may cause inconveniences such as difficulty in viewing the screen.

Therefore, the present application eliminates the above-mentioned inconvenience by configuring the display so that it can be vertically moved up and down.

Means for Solving the Problems In order to achieve the above-mentioned object, the present application provides a top plate with an opening having a size that allows a display to be projected and retracted, and the opening pivoted with a lid piece that tilts backward. Inside the main body, an elevating mechanism that can be expanded and contracted in the vertical direction, a mounting table that is installed on the upper part of the elevating mechanism and has a top surface that tilts upward to the front, and between the upper part of the desk body and the mounting table. The constant spring, which is attached to the table and has an elastic force set so as to balance with the weight of the mounting table and the weight of the display mounted on the upper surface of the table, and the display is immersed in the lower surface of the top plate. And a second position where the screen of the display is exposed from the upper surface of the top plate, respectively, and an operating mechanism for vertically moving the mounting table by an external operation. To In order to prevent the display from coming into contact with the lid piece, a roller that comes into contact with the lower surface of the lid piece is provided on the upper end of the push-up rod that stands upright on the mounting table, and further the swinging of the mounting table is prevented. Further, a guide rail extending in the vertical direction is provided on the inner side surface of the desk body, and a guide roller that is guided by the guide rail to roll is provided on the side surface of the mounting table. In addition, as a specific configuration of the lifting mechanism, the lifting mechanism pivotally mounts a pair of left and right tilting pieces in an X shape on both ends of a horizontally long intermediate shaft, and connects opposite ends at the left and right positions by connecting rods. The elevator members connected to each other are engaged with both ends of the front lower connecting rod via slits so as to be movable back and forth, and both ends of the rear lower connecting rod are pivotally attached to extend in the front-back direction of the desk body. A pair of left and right fixed rails fixed to the lower part and both ends of the front upper connecting rod are engaged with each other through slits so as to be movable back and forth, and both ends of the rear upper connecting rod are pivotally attached. Direction, and a pair of left and right movable rails that are arranged so as to be movable up and down. As a specific structure of the operating mechanism, the operating mechanism is rotatably attached to the mounting table via a bearing piece and is moved forward. It extends and the front end is engaged with a vertically long hole formed in the front plate of the desk body. ,
A long operating shaft with a knob at the front end and this operating shaft,
It comprises a locking plate which is vertically installed and which has two engaging recesses at its lower part for engaging with the upper connecting rod at the front of the lifting mechanism and respectively holding the first position and the second position. Further, the front part of the top plate is further projected forward, and a shelf for mounting a keyboard is provided on the lower surface thereof.

Operation When using the display, the display is mounted on the upper surface of the mounting table so that the screen faces upward, and the operating mechanism causes the display to immerse under the top plate.
Hold in position. In this state, the lifting mechanism is in the most contracted state, and from this state, the operating mechanism
Lift the platform up. An extremely light force is sufficient for this lifting force because the elastic force of the constant spring is balanced with the weight of the mounting table and the weight of the display. And the elevating mechanism extends with this rise. Due to this rise, the lid piece tilts backward,
The display protrudes from the opening so that the screen is exposed from the upper surface of the top plate, and the second position is held by the operating mechanism, and the display is used in this state. When the display is to be stored under the top plate, the mounting table is pushed downward by the operating mechanism, contrary to the above. Then, the elevating mechanism contracts, the display descends together with the mounting table, the lid piece tilts by its own weight to close the opening, and the elevating mechanism restores to the most contracted first position. It is held by the actuating mechanism.

In addition, when the lid piece is turned over in the state of the second position, the upper surface of the display is opened, so that the display can be repaired or the display can be easily replaced.

In the above, when a roller that comes into contact with the lower surface of the lid piece is provided at the upper end of the push-up rod that stands upright on the mounting table,
As the display rises together with the mounting table, the lid pushes the lid piece up.

Further, when the guide rail extending in the vertical direction is provided on the inner side surface of the desk body, and the guide roller that is guided by the guide rail to roll is provided on the side surface of the mounting table, when the mounting table is raised or lowered, The guide roller travels along the guide rail, and the swing of the mounting table due to the lifting operation is suppressed.

Further, an elevating mechanism pivotally mounts a pair of left and right tilting pieces in an X shape on both ends of a horizontally long intermediate shaft, and an elevating member in which end portions facing each other at the left and right positions are connected by a connecting rod, respectively. The left and right pair of left and right lower levers fixed to the lower part of the desk body by engaging both ends of the lower connecting rod in the front and rear direction through slits and extending in the front and rear direction with both ends of the lower connecting rod in the rear position pivotally attached. Fixed rail and both ends of the upper connecting rod at the front are movably moved back and forth through slits, and both ends of the upper connecting rod at the rear are pivotally attached to extend in the front-back direction and can be moved up and down. When it is composed of a pair of left and right movable rails that are arranged in a pair, the first position is formed when the elevating member is most contracted, and the second position is formed when the elevating member is most expanded. Further, in the above-mentioned configuration, the operating mechanism is rotatably attached to the mounting table via the bearing piece and extends forward, and the front end portion is engaged with a vertically long slot formed in the front plate of the desk body, A long operating shaft having a knob at the front end, and a vertical operating rod that is vertically hung on the operating shaft and engages with the upper connecting rod at the front of the elevating mechanism at the lower part to move the first position and the second position. In the first position in which the lifting member is most contracted, the upper connecting rod at the front position is engaged with the engagement recess at the front position. In this state, the state of the first position is maintained, and when the elevating member is in the most extended second position, the front upper connecting rod engages with the rear engaging recess to move the second position thereof. The state of the position is maintained, and the engaging and disengaging operation of the front connecting rod and the engaging recess is performed by rotating the operating shaft with the knob. It is carried out by.

Further, when the front part of the top plate is projected forward and a keyboard mounting shelf is provided on the lower surface of the top plate, the keyboard is taken in and out of the shelf.

Example Hereinafter, an example of the present application will be described in detail with reference to the drawings.
In (1), a top plate (3) is installed on the upper surface of a frame member (2), and an opening (4) of a size that allows the display P to appear and disappear in a tilted state in which the display P rises forward is provided in the center of the top plate (3). A desk body, in which a lid piece (5) is openably and closably attached to a rear edge of the portion (4), and the frame member (2) has a cubic shape by a plurality of horizontal bars (6) and vertical bars (7). The outer peripheral surface is covered with side plates (8), and the inward U-shaped guide rails (9), (extending in the height direction) are formed on the left and right inner side surfaces from the front surface of the frame member (2). 9) 'is opposite. (Ten)
Is a lifting mechanism provided at the bottom of the desk body (1), and a pair of left and right tilting pieces (12), (1
2) ′ is pivotally attached in an X shape, and the end portions opposed to each other at the left and right positions thereof are respectively connected to the elevating member (14) by connecting rods (13) a to (13) b, and the front lower connection. Rod (13) a
Both ends of are engaged through the slit (15) so that they can move back and forth,
Also, a pair of left and right fixed rails (16), (16) ', which extend in the front-rear direction in which both ends of the rear lower connecting rod (13) b are pivotally attached and are fixed to the lower left and right positions of the frame member (2). And the both ends of the front upper connecting rod (13) c are movably engaged with each other through the slit (17), and both ends of the rear upper connecting rod (13) d are pivotally attached. A pair of left and right movable rails (18), (18) ′ that extend in the front-rear direction and are vertically movable at left and right positions.
It consists of and. (19) is a mounting table for the display P provided on the upper part of the lifting mechanism (10), and its upper surface (2
0) is inclined forward so that the screen of the display is set to an angle that is most easily seen by the user, and the display P is mounted on the upper surface (20). The upper surface (20) of the mounting table (19) is vertically pushed up from its intermediate position on the left and right side edges of the mounting table (19) and the upper end thereof is supported by a roller (21) which abuts the lower surface of the lid piece (5). A rod (22) is provided upright, and left and right guide rollers (23) rollingly contacting the left and right guide rails (9), (9) 'are provided at the upper and lower positions of the left and right side surfaces of the mounting table (19). , (23) 'are pivoted.
(24) has one end attached to the left and right side surfaces of the upper frame of the frame member (2) and the center portion of the front surface through a mounting tool (25), and the other end is the left and right side surfaces of the mounting table (19) and the center of the front surface. Roll-shaped constant springs attached to the
The constant springs (24) balance the weight of the mounting table (19) with the weight of the display P mounted on the upper surface of the mounting table (19). The elasticity of the constant spring (24) is set slightly higher. (26) is the first for the display P to be submerged in the desk body (1) as the mounting table (19) is moved up and down.
The operating mechanism (26) holds the bearing piece (27) on the mounting table (19) by holding the position and the second position where the screen of the display P is exposed on the upper surface of the top plate (1). It is rotatably attached through and extends forward, and the front end portion protrudes forward through a vertically long slot (28) formed in the front plate (8) a of the desk body (1) and at the front end thereof. The long operating shaft (30) having a knob (29) engages with the upper connecting rod (13) c at the front of the lifting mechanism (10) to engage the first position and the second position.
A locking plate (33) having two engaging recesses (31) and (32) for holding the position and the position respectively at the lower edge is vertically provided. Reference numeral (34) is a shelf for keyboard placement, which is provided on the lower surface of the projecting portion of the top plate (3) protruding forward from the front surface of the frame member (2).

Then, when using, on the upper surface (20) of the mounting table (19),
The display P is mounted so that its screen faces upward, and as shown by the solid line in FIG. 2, the front upper connecting rod (13) is inserted into the front engaging recess (32) of the locking plate (33). ) Engage c. In this state, the display P is at the first position where it is immersed in the lower surface of the top plate (3), and the lifting mechanism (10) is in the most contracted state. Then, from this state, the operating shaft (30) is rotated by the knob (29) to disengage the front engagement recess (31) from the connecting rod (13) c, and then the knob (29) is lifted upward. . This lifting force is sufficient because the elasticity of the three constant springs (24) is balanced with the sum of the weight of the mounting table (19) and the weight of the display P, and an extremely light force is sufficient. The display P ascends vertically with the mounting table (19), and the elevating mechanism (10) extends along with this ascent, and the left and right guide rollers (23), (23) 'are guided by the guide rails (9),
The rolling contact of the mounting table (19) suppresses the swinging of the mounting table (19). Further, the roller (21) of the push-up rod (22) that rises together with the mounting table abuts the lower surface of the lid piece (5) and pushes it up, and the lid piece (5) tilts backward. Then, as the display P projects from the opening (4) and reaches the second position where the screen is exposed from the upper surface of the top plate (3) as shown by the phantom line in FIG. 2, the knob (29)
When is rotated, the rear upper engagement rod (13) c is engaged with the rear engagement recess (32) of the locking plate (33) to maintain the state, and the display P is held in this state. use. When the display P is stored under the top plate (3), the upper connecting rod (13) c at the front and the engagement recess (32) at the rear of the locking plate (33) are reversed, contrary to the above. Release the engaged state of and push down the knob (29) in this state. When the mounting table (19) reaches the state shown by the solid line in FIG. 2, the front engaging recess (31) of the locking plate (33) is engaged with the front upper connecting rod (13) c. In this state, the lid piece (5) tilts by its own weight and closes the opening (4).

It should be noted that when the lid piece (5) is inverted from the state of the phantom line in FIG. 2, the upper surface of the display P is opened, which is convenient for repairing the display P or replacing the display P.

In the above description, the operation shaft (30) is fixed to the mounting table (19), and a knob is attached to the front end of the table by screwing, and the inner surface of the knob is fixed to the frame member (2) by tightening the knob. The mounting table (19) may be configured to be held at the first position and the second position, respectively, by a method of press-contacting and fixing to the front plate (8) a. In this case, the locking plate (33) is held. Is omitted.

EFFECTS OF THE INVENTION As described above, the present application has a configuration in which the display is vertically moved up and down. Therefore, the depth dimension of the desk can be set to the minimum, and a large number of display desks can be placed in a room of a certain size. The screen of the display can be tilted regardless of the size of the screen, and can be set to a certain angle, that is, a certain tilt that is most visible to the user, which is convenient for use. Since they are not connected, opening the lid has the advantage of being convenient for repairing or replacing the display.

Further, a guide rail extending in the vertical direction is provided on the inner side surface of the desk main body, and a guide roller that is guided by the guide rail to roll is provided on the side surface of the mounting table, so that the mounting table moves up and down. This has the advantage that it is possible to prevent the possibility of rocking due to external vibration during use of the display.

[Brief description of drawings]

The drawings show the embodiments of the present application. Fig. 1 is a partially cutaway side view of the whole body, Fig. 2 is a longitudinal side view, Fig. 3 is a partially cutaway front view, and Fig. 4 is a use state. It is a perspective view. In the figure, (1) is a desk body, (2) is a frame member, (3) is a top plate, (4) is an opening, (5) is a lid piece, (8) a is a front plate, (9), (9) 'is a guide rail, (10) is a lifting mechanism, (11) is an intermediate shaft, (12) and (12)' are tilting pieces, (1
3) a, (13) b, (13) c, (13) d are connecting rods, (14) is a lifting member, (15) and (17) are slits, (16) and (16) '
Is a fixed rail, (18), (18) 'is a movable rail, (19)
Is a mounting table, (20) is a top surface, (21) is a roller, (22) is a push-up rod, (23) and (23) 'are guide rollers, (24) is a constant spring, (26) is an operating mechanism, ( 27) is a bearing piece,
(28) is a long hole, (29) is a knob, (30) is an operating shaft, (3
1) and (32) are engaging recesses, and (33) is a locking plate.

Claims (6)

[Claims] 1. An elevating mechanism capable of expanding and contracting in a vertical direction inside a desk body provided with an opening of a size capable of projecting and retracting a display, and a lid piece which tilts rearward is pivotally attached to the opening. , A mounting table provided on the upper part of the lifting mechanism, the upper surface of which is inclined upward to the front, and a mounting table mounted between the upper part of the desk body and the mounting table, and the weight of the mounting table and its weight. A constant spring whose elastic force is set so as to balance with the weight of the display mounted on the upper surface, and a first position where the display sinks into the lower surface of the top plate,
A display desk, characterized in that the display screen holds a second position exposed from the upper surface of the top plate, and an operating mechanism for raising and lowering the mounting table by an external operation. 2. The display desk according to claim 1, wherein a roller that abuts a lower surface of the lid piece is provided at an upper end of a push-up rod vertically provided on the mounting table. 3. A guide rail extending vertically is provided on an inner side surface of the desk body, and a guide roller which is guided by the guide rail to roll is provided on a side surface of the mounting table. The display desk according to claim 1 or 2. 4. An elevating member in which an elevating mechanism pivotally mounts a pair of left and right tilting pieces in an X shape on both ends of a laterally long intermediate shaft, and has end portions opposed to each other at left and right positions thereof connected by connecting rods. And both ends of the front lower connecting rod are movably moved back and forth through slits, and both ends of the rear lower connecting rod are pivotally attached and extend in the front-back direction and fixed to the lower part of the desk body. A pair of left and right fixed rails are engaged with both ends of the front upper connecting rod via slits so as to be movable back and forth, and both ends of the rear upper connecting rod are pivotally attached to extend in the front-rear direction. 4. The display desk according to claim 1, 2 or 3, comprising a pair of left and right movable rails that are vertically movable. 5. An operating mechanism is rotatably attached to a mounting table via a bearing piece and extends forward, and a front end of the operating mechanism engages with a vertically long slot formed in a front plate of a desk body, and at the same time, the front end. A long operating shaft with a knob on the operating shaft,
And a locking plate having two engaging recesses in the lower part, which engage with the upper connecting rod at the front of the elevating mechanism and respectively hold the first position and the second position. The display desk according to claim 4, which is characterized in that. 6. A display desk according to claim 1, 2, 3, 4, or 5, characterized in that a front part of the top plate is projected forward and a shelf for mounting a keyboard is provided on the lower surface thereof. .